#36419 did not cover fetch_ completions.  Most of the remaining 7% of autocomplete not covered by tests is in that function.  I want to rename smalll to small and bigl to big (and in test file); they are awkward to read and write.  I may want to revise otherwise to aid testing.

The test line referencing #36405 fails when run in autocomplete itself.  I need to refresh myself as to why I added it and revise or delete.

Some of the test_fetch_completion needs revision, and it should be split before being augmented.

An htest would make manual testing of intended behavior changes easier.